Princess Mako, the eldest granddaughter of Emperor Akihito, and her longtime boyfriend, Kei Komuro, will speak to the press together on Sept. 3 to officially announce their engagement, the Imperial Household Agency said.
The announcement had originally been planned for July 8 but the couple decided to postpone it in the wake of damaging rains that lashed southwestern prefectures earlier in the month.
The new announcement date was fixed after adjusting the schedules for the Emperor, Empress Michiko, and the parents of the princess, Prince Akishino and Princess Kiko.
Princess Mako and Komuro, both 25, met five years ago when they were students at International Christian University in Tokyo, and Komuro reportedly proposed about a year after they started dating. He currently works at a law firm in the capital.
However, under Japan’s law, any female royal family member loses her status on marrying a commoner.